When you export to Excel, detail fields will be available on the PivotTable toolbar in Excel, but the fields won't be displayed in the report.
1	When	when	SCONJ	_	Case=Nom	3	mark	_	_
2	you	you	PRON	PERS-P2	_	3	nsubj	_	_
3	export	export	VERB	PRES	Mood=Ind|Tense=Pres|VerbForm=Fin	11	advcl	_	_
4	to	to	ADP	_	_	5	case	_	_
5	Excel	Excel	PROPN	SG-NOM	Number=Sing	3	obl	_	SpaceAfter=No
6	,	,	PUNCT	Comma	_	3	punct	_	_
7	detail	detail	NOUN	SG-NOM	Number=Sing	8	compound	_	_
8	fields	field	NOUN	PL-NOM	Number=Plur	11	nsubj	_	_
9	will	will	AUX	PRES-AUX	VerbForm=Fin	11	aux	_	_
10	be	be	AUX	INF	VerbForm=Inf	11	cop	_	_
11	available	available	ADJ	POS	Degree=Pos	0	root	_	_
12	on	on	ADP	_	_	15	case	_	_
13	the	the	DET	DEF	Definite=Def|PronType=Art	15	det	_	_
14	PivotTable	PivotTable	NOUN	SG-NOM	Number=Sing	15	compound	_	_
15	toolbar	toolbar	NOUN	SG-NOM	Number=Sing	11	nmod	_	_
16	in	in	ADP	_	_	17	case	_	_
17	Excel	Excel	PROPN	SG-NOM	Number=Sing	15	nmod	_	SpaceAfter=No
18	,	,	PUNCT	Comma	_	25	punct	_	_
19	but	but	CCONJ	_	_	25	cc	_	_
20	the	the	DET	DEF	Definite=Def|PronType=Art	21	det	_	_
21	fields	field	NOUN	PL-NOM	Number=Plur	25	nsubj:pass	_	_
22	wo	will	AUX	PRES-AUX	VerbForm=Fin	25	aux	_	SpaceAfter=No
23	n't	not	PART	NEG	_	25	advmod	_	_
24	be	be	AUX	INF	VerbForm=Inf	25	aux:pass	_	_
25	displayed	display	VERB	PASS	Tense=Past|VerbForm=Part|Voice=Pass	11	conj	_	_
26	in	in	ADP	_	_	28	case	_	_
27	the	the	DET	DEF	Definite=Def|PronType=Art	28	det	_	_
28	report	report	NOUN	SG-NOM	Number=Sing	25	obl	_	SpaceAfter=No
29	.	.	PUNCT	Period	_	11	punct	_	_
